If you can, it is good to irrigate out the abscess cavity with a mixture of 1/2 water and 1/2 peroxide (you can use a syringe or one of those bulb syringes for babies). That will clear out the pus and dead tissue. Be sure that you or a helper scruffs your ferret while doing this procedure. Once a day is probably enough. Bacitracin or Neosporin should be fine with a ferret. Stephen Cox MD (human doctor). [Posted in FML issue 4675]